The Models of the SureSense range for water-based and non-conducing materials control /

The Charis systems allow foam detection and, liquid level control even in the presence of severe fouling thanks to their IMA Sensing® technology. Liquid level controls and foam detections remain unaffected by temperature, pH, conductivity changes or pressure. Charis sensors can be used in hazardous areas with suitable zener barriers.

The Charis Technology Foam Sensor operates by passing a small alternating current through the foam or the liquid under test, and uses this to measure impedance. The impedance of the material being sensed is used to determine the presence of foam or liquid.

The sensor is designed with two electrodes called Sense (at the end of the sensor) and Guard (on the body of the sensor). The Sense electrode is used to sense foam while the Guard electrode is designed to prevent the build-up of any surface coating from causing false readings. The Guard electrode supplies all the leakage current leaving the Sense electrode to sense only foam and isolates the sensor from the interference caused by fouling.
This technology enables the sensor to continue working reliably even in conditions of extreme fouling.

This exclusive Charis Technology allows a reliable work and will fit any vessels from two litres to a hundred cubic metres capacity.

Applications :

Biotechnology or pharmaceuticals (continuous fermentation process or fedbatch ; concentration by ultrafiltration with a setpoint automatic shutdown ; height measurement into a bubble trap system)
Food
Waste water
Effluent

Technical Data :

Liquid Level Measurement .
Foam Height Detection.
Usable in hazardous area with suitable zener barriers. Controlers must be mounted in a safe area.

Sensors are available in 12 mm or 18mm diameter.
A large range of fittings are available, such as clamps, flanges, BSP fittings , 19mm and DN25 (Ingold).